[dieselford755]

How common are for these to fail? 160,000 How much would dealership charge for labor to install these on average? I thought about making a tool but I dunno. Maybe dealer would let me use there's.

 

[lari2001]

are yours leaking? My 01 F350 has 165,000 miles and mine aren't leaking.

 

[JimTJr]

Yea, no one replaces these on a "Preventative" maintenance type schedule.
It they are not leaking, no worries.

 

[klhansen]

How much would dealership charge for labor to install these on average?

WAY too much!!

I thought about making a tool but I dunno.

I made one, but don't plan on using it till absolutely necessary.

I'm with the other guys. Leave 'em alone.